A simple refrigeration plant consists of an evaporator, condenser, compressor, three throttling valves, a heat exchanger...

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A simple refrigeration plant consists of an evaporator, condenser, compressor, three throttling valves, a heat exchanger and a direct contact heat exchanger, as shown below. The working fluid in the system is R-134a. The refrigerant exits the compressor at state 3 and enters the condenser. At the exit of the condenser, state 4, some of the refrigerant is bled off, throttled to state 7, enters the heat exchanger where it is heated to state 8, and is then throttled to state 9. The remaining refrigerant enters the heat exchanger, is cooled to exit state 5, throttled to state 6 and then flows through the evaporator, emerging at state 1. The two fluid streams, 1 and 9, mix in the well-insulated direct contact heat exchanger and exit at state 2. The refrigerant at state 2 is compressed to state 3 in the compressor. Given the information below, determine the coefficient of performance for the refrigeration cycle. State all assumptions. (B = 2.78) im = 4 kg/s T3 = 55°C P6 = 140 kPa %3! P1 = 140 kPa P4 =1 MPa p7 = 320 kPa I1 = 1 T4 = 0 Ps = 320 kPa P2 = 140 kPa p5 = 1 MPa 18 = 1 P3 = 1 MPa T; = 20°C P9 = 140 kPa Heat Exchange Condenser Direct Contact H.E. Evaporat or A simple refrigeration plant consists of an evaporator, condenser, compressor, three throttling valves, a heat exchanger and a direct contact heat exchanger, as shown below. The working fluid in the system is R-134a. The refrigerant exits the compressor at state 3 and enters the condenser. At the exit of the condenser, state 4, some of the refrigerant is bled off, throttled to state 7, enters the heat exchanger where it is heated to state 8, and is then throttled to state 9. The remaining refrigerant enters the heat exchanger, is cooled to exit state 5, throttled to state 6 and then flows through the evaporator, emerging at state 1. The two fluid streams, 1 and 9, mix in the well-insulated direct contact heat exchanger and exit at state 2. The refrigerant at state 2 is compressed to state 3 in the compressor. Given the information below, determine the coefficient of performance for the refrigeration cycle. State all assumptions. (B = 2.78) im = 4 kg/s T3 = 55°C P6 = 140 kPa %3! P1 = 140 kPa P4 =1 MPa p7 = 320 kPa I1 = 1 T4 = 0 Ps = 320 kPa P2 = 140 kPa p5 = 1 MPa 18 = 1 P3 = 1 MPa T; = 20°C P9 = 140 kPa Heat Exchange Condenser Direct Contact H.E. Evaporat or